Generate DSA SSH Key

Generates a DSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY).

Download Chilkat SSH / SFTP ActiveX

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

set key = CreateObject("Chilkat.SshKey")

'  numBits should be a minimum of 1024 and
'  a multiple of 64.  Typical values are
'  1024 or 2048.
numBits = 2048
success = key.GenerateDsaKey(numBits)
If (success <> 1) Then
    outFile.WriteLine("Invalid numBits passed to DSA key generation method.")
    WScript.Quit
End If

'  Note: Generating a public/private key pair is CPU intensive
'  and may take a short amount of time (more than few seconds,
'  but less than a minute).

'  Export the DSA private key to OpenSSH, PuTTY, and XML and save.
exportEncrypted = 0
exportedKey = key.ToOpenSshPrivateKey(exportEncrypted)
'  Chilkat provides a SaveText method for convenience...
success = key.SaveText(exportedKey,"privkey_openssh_unencrypted.pem")

'  Export with encryption to OpenSSH private key format:
key.Password = "secret"
exportEncrypted = 1
exportedKey = key.ToOpenSshPrivateKey(exportEncrypted)
success = key.SaveText(exportedKey,"privkey_openssh_encrypted.pem")

'  Export the DSA private key to unencrypted PuTTY format:
exportEncrypted = 0
exportedKey = key.ToPuttyPrivateKey(exportEncrypted)
success = key.SaveText(exportedKey,"privkey_putty_unencrypted.ppk")

'  Export the DSA private key to encrypted PuTTY format:
key.Password = "secret"
exportEncrypted = 1
exportedKey = key.ToPuttyPrivateKey(exportEncrypted)
success = key.SaveText(exportedKey,"privkey_putty_encrypted.ppk")

'  Export private key to XML:
exportedKey = key.ToXml()
success = key.SaveText(exportedKey,"privkey.xml")

'  ----------------------------------------------------
'  Now for the public key....
'  ----------------------------------------------------

'  The Secure Shell (SSH) Public Key File Format
'  is documented in RFC 4716.
exportedKey = key.ToRfc4716PublicKey()
success = key.SaveText(exportedKey,"pubkey_rfc4716.pub")

'  OpenSSH has a separate public-key file format, which
'  is also supported by Chilkat SshKey:
exportedKey = key.ToOpenSshPublicKey()
success = key.SaveText(exportedKey,"pubkey_openSsh.pub")
outFile.Close